Communities: - a post addressed to a community (to, cc or audience) is accepted according to its posting policy - followers, anyone, or moderators - and GroupDistributor announces the whole activity with `audience` to the community's followers, plus the object for new posts so Mastodon shows them; updates and deletes of community content are announced too; - top-level posts are Pages with a name (the title, or a headline from the text); /flock counts members, /wardens lists moderators; - a Mastodon client posts into a community by mentioning it, or into a remote group, which sets `audience`; - an Announce of an activity from a remote group a persona follows (Lemmy) is followed through: the object is fetched from its own origin, kept with its AudienceURI, and fanned out to the group's local followers; updates are applied in place and deletes checked against the origin. Circles stop being local-only: an undiscoverable Group actor whose follows are all requests the owner approves; posts addressed to the circle and its /flock and delivered to members' own inboxes, never announced, never public; a remote member's post into the circle is accepted from members only. SignedFetchAuthorizer serves circle posts and collections only to a signed request from a member or a member server's instance actor - 404 for anyone else. Circles never surface in search, lookups, mentions, account ids or profile pages. Federation:SecureMode requires a valid signature on every GET under /peasants except the instance actor. Group forms take a posting policy. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB
81 lines
2.9 KiB
C#
81 lines
2.9 KiB
C#
using MongoDB.Entities;
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using PrivaPub.Federation.Actors;
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using PrivaPub.Federation.Objects;
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using PrivaPub.Federation.Outbox;
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using PrivaPub.Federation.Rendering;
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using PrivaPub.Models.Federation;
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using PrivaPub.Models.Group;
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using PrivaPub.Models.Post;
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using PrivaPub.Models.Social;
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using PrivaPub.Models.User;
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using PrivaPub.StaticServices;
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using System.Text.Json.Nodes;
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using static PrivaPub.Federation.Inbox.ForeignMembers;
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using static PrivaPub.Federation.Objects.ActivityJson;
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using PostEntity = PrivaPub.Models.Post.Post;
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namespace PrivaPub.Federation.Inbox.Handlers
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{
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public class DeleteHandler : IActivityHandler
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{
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readonly DbEntities _dbEntities;
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readonly ILocalActorService _localActors;
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readonly IRemoteActorService _remoteActors;
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readonly IDeliveryService _delivery;
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readonly IGroupDistributor _groups;
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public DeleteHandler(DbEntities dbEntities, ILocalActorService localActors, IRemoteActorService remoteActors, IDeliveryService delivery,
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IGroupDistributor groups)
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{
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_groups = groups;
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_dbEntities = dbEntities;
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_localActors = localActors;
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_remoteActors = remoteActors;
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_delivery = delivery;
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}
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public string Type => "Delete";
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public async Task Handle(JsonNode activity, ForeignAvatar actor, CancellationToken token)
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{
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var delete = activity;
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var objectUri = Id(delete["object"]);
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if (!Origin.Same(objectUri, actor.ActorURI))
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return;
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if (objectUri == actor.ActorURI)
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{
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actor.DeletionAt = DateTime.UtcNow;
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actor.AccountState = AvatarAccountState.Deleted;
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await DB.Default.SaveAsync(actor, token);
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var followers = await _dbEntities.Followers.Match(f => f.ActorURI == actor.ActorURI).ExecuteAsync(token);
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foreach (var follower in followers)
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{
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await DB.Default.DeleteAsync<Follower>(follower.ID);
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if (follower.LocalActorKind == LocalActorKind.Group)
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await RemoveForeignMember(follower.LocalActorId, actor.ActorURI, token);
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}
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await DB.Default.DeleteAsync<Following>(f => f.TargetActorURI == actor.ActorURI);
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await DB.Default.DeleteAsync<TimelineEntry>(e => e.AuthorAccountId == actor.ID);
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return;
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}
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var post = await _dbEntities.Posts.Match(p => p.ObjectURI == objectUri && p.ActorURI == actor.ActorURI).ExecuteFirstAsync(token);
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if (post == default)
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return;
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await DB.Default.DeleteAsync<PostEntity>(post.ID);
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await DB.Default.DeleteAsync<TimelineEntry>(e => e.PostId == post.ID || e.ReblogOfPostId == post.ID);
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if (!string.IsNullOrEmpty(post.GroupId) && await _localActors.FindById(LocalActorKind.Group, post.GroupId, token) is { IsCircle: false } community)
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await _groups.Announce(community, activity.AsObject(), post.ObjectURI, isNewPost: false, token);
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await DB.Default.DeleteAsync<PostEntity>(p => p.ReblogOfPostId == post.ID);
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if (!string.IsNullOrEmpty(post.AnsweringToPostId))
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await DB.Default.Update<PostEntity>().MatchID(post.AnsweringToPostId).Modify(b => b.Inc(p => p.RepliesCount, -1)).ExecuteAsync(token);
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}
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}
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}
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